Results of investigation of the spectral-luminescent and lasing characteristics of films based on methacrylates doped with pyrromethene 567 lasing in the yellow-green spectral range are presented. It is shown that incorporation of an additional layer, which improves the waveguide properties of the thin-film structure based on polymethylmethacrylate, increases the energy conversion efficiency and substantially reduces in different degrees the lasing threshold of the examined structures equal to 50–250 kW/cm2. In the structure with additional layer, an efficiency of 60% comparable to blocks of solid-state laser-active elements of organic lasers is obtained.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 12, pp. 135–141, December, 2018.
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Telminov, E.N., Nikonova, E.N., Solodova, T.A. et al. Thin-Film Organic Structures Lasing in Yellow-Green Spectral Range. Russ Phys J 61, 2293–2299 (2019). https://doi.org/10.1007/s11182-019-01670-7
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DOI: https://doi.org/10.1007/s11182-019-01670-7